AM is your certified source for calibration services and precision test equipment. Our factory trained technicians have been exceeding industry standards for quality and service for over 10 years. Our qualifications include ISO 9001:2008 certification, ANSI Z540 compliance, NIST traceability and Colorado State Weigh & Measures certification. Calibration Services. State Certified, ISO 9001 Compliant, NIST Traceable.